Question 1

What type of material would be best to cover your window with that would help keep the sun out of your room so you can sleep

Accepted Answer

translucent

Answer

transparent

Answer

opaque

Answer

glass material

Question 2

Why do people prefer to wear light-colored clothes during summer?

Accepted Answer

it will reflect light & will not absorb the heat

Answer

it will absorb light nor absorb heat

Answer

it will not reflect the light & will not absorb the heat

Answer

it will absorb light and absorb heat

Question 3

Which of the following is NOT a part of simple electric circuit?

Accepted Answer

electromagnet

Answer

conductors

Answer

load

Answer

source

Question 4

Which of the following serves as the Source of energy in a circuit?

Accepted Answer

battery

Answer

wire

Answer

bulb

Answer

switch

Question 5

A simple circuit has long coiled wire, 1.5 volts & a bulb. Why does the bulb get dimmer.

Accepted Answer

because the power supply is not enough to light the bulb brighter.

Answer

because the wire is too short

Answer

because the wire is too long

Answer

because the load is too many

Question 6

What needs to be

Accepted Answer

add a battery and close the switch

Answer

close the switch

Answer

add another bulb or lamp

Answer

add another wire

Question 7

What will happen if part of the circuit is not properly connected?

Accepted Answer

no electricity will flow through the wire

Answer

electrons will continue to flow

Answer

electricity will flow

Answer

electricity will flow to the appliances

Question 8

Simple circuit consists of the source, wire, breaks, and load. Which of the following refers to the load

Accepted Answer

bulb

Answer

switch

Answer

dry cell

Answer

path

Question 9

Imagine a simple circuit with one 1.5 volts battery and a bulb. When the 1.5 volts battery is replaced with 3 volts battery, what will happen?

Accepted Answer

the bulb gets brighter

Answer

the bulb gets dimmer

Answer

nothing has changed

Answer

the bulb stays at the same level of brightness

Question 10

What will happen to the voltage of a parallel circuit if more bulbs are added, and the number of dry cells remains the same?

Accepted Answer

the voltage will increase

Answer

the voltage remains the same

Answer

the voltage will decrease

Answer

the voltage fluctuate

Question 11

Based on the illustration of a series circuit, which statement is NOT a description of a series circuit?

Accepted Answer

Even if there is a defect in the line circuit, the entire connection will still function because the circuit is open

Answer

In series circuit, the same current flows through all the light bulb.

Answer

The components of the electrical circuit are arranged in a line like a Christmas Light

Answer

Its electric charges flow in a single path because the connection is arranged in a form of chain.

Question 12

Compare the illustrations below. Defend your answer as you give the difference between the series and parallel circuit

Accepted Answer

In a series circuit, if one component breaks down, the whole circuit will burn out while in a parallel circuit, even if one component breaks down, it will still function because it has an independent circuit.

Answer

A parallel circuit

Question 13

What makes a simple circuit different from DC circuit

Accepted Answer

source of electricity in simple circuit is a dry cell

Answer

source of electricity can be solar cells of the dynamo type

Answer

the path is a copper wire

Answer

the resistant or load is bulb

Question 14

Which transform electricity to magnetism

Accepted Answer

bullet train

Answer

electric pot

Answer

electric fans

Answer

cellphones

Question 15

Which of the following can make an electromagnet stronger

Accepted Answer

all of the above

Answer

using a core with a bigger diameter

Answer

increasing the number of turns in the coil wire

Answer

adding more dry cells

Question 16

The following are the factors that increase the strength of an electromagnet EXCEPT for one. What is it

Accepted Answer

decrease the number of turns of wire in the nail

Answer

adding more batteries or dry cell

Answer

changing the size of the nail or the iron core

Answer

increase the number of loops of wire around the iron core

Question 17

What happens when a part of an electromagnet is disconnected?

Accepted Answer

it loses its magnetism

Answer

the electromagnet becomes a permanent magnet

Answer

electricity continues to flow through it

Answer

there is an increase in the number of materials attracted

Question 18

Which activity uses an electromagnet

Accepted Answer

using a doorbell

Answer

lighting a room

Answer

cooking

Answer

polishing the floor

Question 19

Electromagnets have many uses in our homes. How does doorbell work?

Accepted Answer

When you press the button of a doorbell, you close a circuit. The current moves through a wire loop and the wire becomes electromagnetic

Answer

When an electric current doesn't run through a loop of wire electromagnet is magnetic

Answer

When you press the button of a doorbell, you open a circuit. The current moves through a wire loop and the wire becomes electromagnetic

Answer

When an electric current doesn't run through a loop wire, magnetic is not magnetic

Question 20

Devices and appliances make use of electromagnets such as cranes, radios, doorbells, telephones and speakers. How does magnets work?

Accepted Answer

When current runs through it, the electromagnets work. When the current is cut off, electromagnet automatically loses its magnetism.

Answer

When the current is not open, the electromagnet automatically loses its magnetism

Answer

The current is a permanent magnet that may be produced by electricity

Answer

The current is an endless magnet that may be produced by electricity

Related quizzes

Related quizzes